一、拓扑模型

二、要求及分析 

要求

配置pc等设备，要求互通

分析

1、配置IP地址

2、路由配置

三、配置IP

r1配置
[r1]interface GigabitEthernet 0/0/0
[r1-GigabitEthernet0/0/0]ip address 192.168.1.100 24
[r1]interface GigabitEthernet 0/0/1
[r1-GigabitEthernet0/0/1]ip address 12.1.1.1 30
[r1]ip route-static 192.168.2.0 24 12.1.1.2
[r1]ip route-static 23.1.1.0 30 12.1.1.2
[r1]IP route-static 192.168.3.0 24 12.1.1.2

r2配置
[r2]interface GigabitEthernet 0/0/1
[r2-GigabitEthernet0/0/1]ip address 12.1.1.2 30
[r2]interface GigabitEthernet 0/0/0
[r2-GigabitEthernet0/0/0]ip address 192.168.2.100 24
[r2]interface GigabitEthernet 0/0/2
[r2-GigabitEthernet0/0/2]ip address 23.1.1.1 30
[r2]ip route-static 192.168.1.0 24 12.1.1.1
[r2]ip route-static 192.168.3.0 24 23.1.1.2

r3配置
[r3]interface GigabitEthernet 0/0/1
[r3-GigabitEthernet0/0/1]ip address 12.1.1.2 30
[r3]interface GigabitEthernet 0/0/0
[r3-GigabitEthernet0/0/0]ip address 192.168.2.100 24
[r3]interface GigabitEthernet 0/0/2
[r3-GigabitEthernet0/0/2]ip address 23.1.1.1 30
[r3]ip route-static 192.168.1.0 24 23.1.1.1
[r3]ip route-static 12.1.1.0 30 23.1.1.1
[r3]ip route-static 192.168.2.0 24 23.1.1.1

四、结果